8(3r+4)-15=3(4r+39)

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Solution for 8(3r+4)-15=3(4r+39) equation:


Simplifying
8(3r + 4) + -15 = 3(4r + 39)

Reorder the terms:
8(4 + 3r) + -15 = 3(4r + 39)
(4 * 8 + 3r * 8) + -15 = 3(4r + 39)
(32 + 24r) + -15 = 3(4r + 39)

Reorder the terms:
32 + -15 + 24r = 3(4r + 39)

Combine like terms: 32 + -15 = 17
17 + 24r = 3(4r + 39)

Reorder the terms:
17 + 24r = 3(39 + 4r)
17 + 24r = (39 * 3 + 4r * 3)
17 + 24r = (117 + 12r)

Solving
17 + 24r = 117 + 12r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-12r' to each side of the equation.
17 + 24r + -12r = 117 + 12r + -12r

Combine like terms: 24r + -12r = 12r
17 + 12r = 117 + 12r + -12r

Combine like terms: 12r + -12r = 0
17 + 12r = 117 + 0
17 + 12r = 117

Add '-17' to each side of the equation.
17 + -17 + 12r = 117 + -17

Combine like terms: 17 + -17 = 0
0 + 12r = 117 + -17
12r = 117 + -17

Combine like terms: 117 + -17 = 100
12r = 100

Divide each side by '12'.
r = 8.333333333

Simplifying
r = 8.333333333

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